Mendalian Inheretance Flashcards
What is the difference between independent assortment and Segregation?
The law of segregation says that only one of the parent’s two alleles get passed on.
The law of independent assortment says that the combinations of alleles will be random.
Give an example of a hemizygous gene
SRY. Only one copy
Give an example of penetrance.
A gene with High penetrance would be one that affects most people who have it.
Low penetrance means that although an individual has a gene, they dont express the disease.
Give an example of Expressivity.
SEXY1 makes attractive people. Some people with SEXY1 are quite ugly. Others with SEXY1 are dead sexy.
This is expressivity
Give an example of Pleiotropy
A mutation in a pigmentation gene could not only affect skin color, but hair color and eye color as well.
One gene codes for multiple traits